anthropoda Flashcards
The appendage is very stable and requires little brain power to move
jointed appendage/leg
The phylum containing
grasshoppers.
anthropoda
Entry point into tracheal Tube system.
spiracle
the grasshopper crushing jaw
is a mandible
fusion of head and thorax
cephalothorax
from insectus, meaning “cut into sections”
insecta
Excretry structures in a
grasshopper.
malphigian tubules
‘Front lip’ of a grasshopper.
labrum
an ‘outer’ skeleton
exoskeleton
has lobster and shrimp
crustacea
secretes digestive enzymes into the stomach
gastric caeca
what is maxilla
help to move food into the mouth
section contains the major organs in the insect
abdomen
animals in this class really have less than 100 legs
Chilopoda
the ‘blood cavity’ containing the major organs
haemocoel
the rear lip of a grasshopper
what is a labium
shedding of an exoskeleton to allow growth
molting
posses pedipalps and chelicera
arachnida
structure moving oxygen to the cells of a grasshopper
tracheal tube network
the grasshopper mouthparts containing sensory palps
maxilla and labium
Anthropoda
anthro=joint, pada=foot
anthropoda key features
- exoskeleton (outer, skeletone)
-composed of chitin and proven
-strong/waterproof - Segmented body plan
-development of special appendages with joint
parts
4.Jointed legs and appendages
5.high degree of cephalization
anthropoda divided into distinct parts
- head: mouth and sense organs
- thorax: walking legs, wings, and part of digestive system, compound eye
- Abdomen: Major internal organs, reproductive organs
- Cephlothorax: head and thorax
arthropoda can
transition to land -appendages, development of wings -metamorphosis: -transition between body forms Symbiotic relationships -decomposers -breakdown of dead organisms
arthropoda muscular system
- Muscular-complex system
a) Muscles occur in bundles & attached to inside of exoskeleton - Reduced Coelom; most of the body cavity consisting of hemocoel filled with blood
arthropoda circulatory system
- open system
- blood is pumped by a heart (dorsal vessel) into a hemocoel (cavity) blood delivers nutrients + picks up waste directly from organs
- valve in dorsal vessel prevents backflow
Excretory System
-Malphigian tubules: drain metabolic waste from body fluids into intestine
Respiratory system
- aquatic: use gills
- terrestrial: tracheal system
- branching network of hollow tubes delivers oxygen to organs
Nervous system
- two ventral nerve cords
- dorsal brain
- well developed sense organs
metamorphosis
- complete 4 stages (egg,larva, pupa, adult)
- gradual: eggs hatch into miniature version of adults
- molting: shedding skeleton when growing and developing
Insecta class
- bees/ants: hierarchal order
- pheromones: affect the development and behaviour of colony
- mouthparts specialized for
- piercing and sucking (mosquito)
- biting and chewing (grasshopper)
- siphoning (Butterly)
- sponging (some flies)
Arachnida class
- two body regions: abdomen,, cephalothorax
- 8 legs
- major organs in abdomen
- book lungs: gas exchange
Crustacea class
- cephalothorax
- two pairs of antennae
- gills used for gas exchange
- 5 or more pairs of legs first pair are pincers
Chilopoda class
centipedes
- ventrally flattened
- one pair of legs per segment
- carnivores with poison fangs
Diplopoda class
- millipedes
- two pairs of legs per segment
- herbivores
